<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 流年 <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用公共文件
function randString($num,$type = 'str')
{
    if ($type == 'str'){
        $base = 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM';
        $big = 51;
    }else{
        $base = '1234567890';
        $big = 9;
    }

    $str = '';
    for ($i= 0; $i < $num;$i++){
        $str .= $base{rand(0,$big)};
    }
    return $str;
}


